Btrfs: fix truncate_space_check
truncate_space_check is using btrfs_csum_bytes_to_leaves() but forgetting to multiply by nodesize so we get an actual byte count. We need a tracepoint here so that we have the matching reserve for the release that will come later. Also add a comment to make clear what the intent of truncate_space_check is. Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>
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@ -4211,11 +4211,20 @@ static int truncate_space_check(struct btrfs_trans_handle *trans,
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{
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int ret;
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/*
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* This is only used to apply pressure to the enospc system, we don't
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* intend to use this reservation at all.
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*/
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bytes_deleted = btrfs_csum_bytes_to_leaves(root, bytes_deleted);
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bytes_deleted *= root->nodesize;
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ret = btrfs_block_rsv_add(root, &root->fs_info->trans_block_rsv,
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bytes_deleted, BTRFS_RESERVE_NO_FLUSH);
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if (!ret)
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if (!ret) {
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trace_btrfs_space_reservation(root->fs_info, "transaction",
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trans->transid,
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bytes_deleted, 1);
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trans->bytes_reserved += bytes_deleted;
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}
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return ret;
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}
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